Research On Image Restoration Technology Of Simple Optical System Based On Light-digital Combination

In the early optical development,people mainly used spherical lens-based optical systems for production and life.This type of lens has the advantages of small size,light weight,simple material,and convenient processing.However,the early lenses only performed a visual presentation for the imaging of objects,and the requirements for image quality were not very high.With the development of science and technology,more and more fields require high-quality images,people began to try to use complex optical systems to correct optical aberrations,This will cause the volume of the overall optical system to increase and the structure to become complex,unable to meet the requirements of portability and light weight.At the same time,it will greatly increase the difficulty of optical processing and assembly,and increase the cost of the overall system.In order to simplify the volume of the optical system and meet the imaging quality requirements at the same time,computational optical imaging technology came into being.With the emergence of cross-scale optical systems combining computational optics and traditional optical systems,optical design,computer technology,electronic information and other disciplines have been successfully combined.Computational optics uses the optical system to convert the target into an intermediate image,which is processed by a computer to obtain a clear image.In this paper,the cause of image degradation and the model of image degradation are first studied,and then the acquisition of the point spread function in the case of spatial variation is studied and explored.We have conducted in-depth exploration of the image restoration algorithm for simple optical systems.On the premise of comparing the traditional hyper-Laplace prior algorithm,we propose a method of introducing overlapping group lasso to constrain the restoration process.By analyzing the sensitivity of the aberration to the algorithm,the corresponding simple optical system structure is designed.In order to verify the effectiveness of the algorithm,a digital simulation experiment is carried out on the simple lens system.The experimental results show that the simple optical system image restoration technique proposed in this paper,which combines light and number,has lower complexity compared to traditional optical systems,and the restored images of the system also have better imaging quality.